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This tag is for questions on the meaning, history, and usage of various symbols and notation that are used to denote different quantities in physics. Don't forget to mention the reference, where you encountered those notations.

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Is there a default notation for 4-vectors while handwriting?

You can use any notation you like. Only thing is that it YOU should find it convenient. … In fact while learning index notation one should better try to translate quantities expressed in index notation in his/her own favorite notation. …
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6 votes

Error in books of conformal field theory?

First equation refers to the passive view of coordinate transformations while the second is the active view. Let $M$ be a manifold with metric $g$ which in local coordinates $x$ is written as $g_{\a …
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